A New Method of Visibility Enhancement for single Foggy or Hazy Image

摘要：

Outdoor images captured in bad weather conditions often have poor qualities in terms of visibility and contrast. In this paper, a new method to enhance visibility of fog or haze-degraded images was proposed. By testing the real scene images taken in foggy weather with prevailing dehazing algorithms, the design concept of this method was as following: the local detail factors of each sub-block on the input image was acquired firstly, then local detail factors and power-law transformation were applied to modify the global histogram based on which the adaptive brightness preserving histogram equalization was conducted. With the proposed algorithm, output image gained excellent visibility and acceptable visual effect. Furthermore, the problem of uneven light transmission in a defective optical system could be compensated to suppress facula effect in output image.

关键词： image enhancement local detail factor single image dehazing adaptive brightness preserving histogram equalization

作者: Hong Zhang Guifang Yan Yuecheng Li Han Hongbin

作者单位: Image processing centre Beihang University, 100191 Beijing, China Department of Radiology Peking University Third Hospital, 100191 Beijing, China

会议类型: 国际会议

会议名称: 2010 International Conference on Measurement and Control Engineering(2010年IEEE测量与控制工程国际会议 ICMCE2010)

会议地点: 成都

会议语种:英文

页码: 120-125

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）